Expired Canadian patentCanada
Process for the further processing of the vacuum residue in a crude oil refinery
CA 2102718 C · Owner: Buss Ag · Inventors: Van Der Piepen, Rolf
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for further processing a residue remaining after vacuum distillation in a crude oil refinery which, entails subjecting the residue remaining after vacuum distillation to flash distillation, thereby producing a distillate and a residue.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 9, 1993 and granted November 10, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 9, 1993
GrantedNovember 10, 1998
Term endedNovember 9, 2013
Patent numberCA 2102718 C
Classification (IPC)C10G7/00 +2 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.